We report on the electrical and magneto-transport properties of the contact formed between polycrystalline NiMnSb thin films grown using pulsed laser deposition (PLD) and n-type degenerate InSb (100) substrates. A negative giant magnetoresistance (GMR) effect is observed when the external magnetic field is parallel to the surface of the film and to the current direction. We attribute the observed phenomenon to magnetic precipitates formed during the magnetic film deposition and confined to a narrow layer at the interface. The effect of these precipitates on the magnetoresistance depends on the thermal processing of the system.

翻译：我们报告了使用脉冲激光沉降(PLD)和N型降解性 InSb(100)基质培养的薄膜之间接触的电和磁-运输特性,当外部磁场与胶片表面和当前方向平行时,观察到负巨磁性效应,我们将观察到的现象归因于磁膜沉降期间形成并局限在界面狭小层的磁沉淀物,这些沉淀物对磁性的影响取决于系统的热处理。